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Message-Id: <1427600162-4610-1-git-send-email-zzhsuny@gmail.com> Date: Sat, 28 Mar 2015 23:36:02 -0400 From: Zhihui Zhang <zzhsuny@...il.com> To: akpm@...ux-foundation.org, mgorman@...e.de Cc: linux-kernel@...r.kernel.org Subject: [PATCH] Do not use arbitrary large movablecore to calculate kernelcore If kernelcore is not set, then we are working with a very large kernelcore for nothing - no movable zone will be created. If kernelcore is set, then it is not respected at all. Signed-off-by: Zhihui Zhang <zzhsuny@...il.com> --- mm/page_alloc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 40e2942..32bf5da 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5199,7 +5199,11 @@ static void __init find_zone_movable_pfns_for_nodes(void) */ required_movablecore = roundup(required_movablecore, MAX_ORDER_NR_PAGES); - corepages = totalpages - required_movablecore; + + if (totalpages > required_movablecore) + corepages = totalpages - required_movablecore; + else + corepages = 0; required_kernelcore = max(required_kernelcore, corepages); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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